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[Solved] Cyfral Smart 5P Intercom Low Sounding Buzzer Issue After Replacing Seko LT 600

chriskiriakou12 780 7
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  • Possible incompatibility causing quiet buzzer and microphone

    #1 21829247
    chriskiriakou12
    Level 2  
    Posts: 4
    Good evening. I have a Seko LT 600 intercom, and I was interested in replacing it. I bought a Cyfral Smart 5P from Amazon; however, after successfully installing it, it was very quiet and the buzzing sound was inaudible. Everything else worked, although the microphone was pretty quiet (it is possible that this was just placebo). I am unsure whether I did something wrong or whether it was because it was a cheaper intercom. I am unsure why this is happening. I ended up putting back the old intercom, and I'm waiting to see whether this can be fixed or if it would be better to return the product and buy something else. I've attached some photos of the old intercom and the connected new intercom. If you have any questions, do let me know. I thank you for your time and help; it is truly appreciated.

    Old electrical panel with fuse holders, switches, and exposed wiring

    Interior of a door phone device with exposed wiring and numbered terminals.

    Old intercom wiring connected to a new electronic circuit board
    AI: Could you please describe how you connected the wires from your building’s system to the Cyfral Smart 5P? For example, did you match the wire colors or follow a specific wiring diagram?
    I followed the manual and connected T3 (Common) to MASA, T6 (Call) to RING, T2 (Speaker) to SPK, T1 (Microphone) to MIC, and the Green button wire to SW1.
    AI: Did you check if the Cyfral Smart 5P is fully compatible with your building’s intercom system (in terms of wiring type, voltage, or signaling method)?
    I ensured that it is compatible with the 4 N configuration and tested it after connecting everything.
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  • Helpful post
    #2 21829333
    Ircys
    Intercoms specialist
    Posts: 6971
    Help: 1342
    Rate: 2085
    You have bought the wrong uniphone. A more appropriate one would be Cyfral Smart 5pg, where the last letter 'g' stands for built-in generator.
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    #3 21829537
    barrrrrman
    Level 14  
    Posts: 101
    Help: 12
    Rate: 20
    As colleague Ircys says you must have a SMART 5PG, what exactly did you order see in the AMAZON shopping cart maybe you ordered a SMART 5PG and received a SMART 5P, they made a mistake or there was a SMART 5P in the box.
  • Need the 5PG version, not 5P

    #4 21833300
    chriskiriakou12
    Level 2  
    Posts: 4
    >>21829333
    Thank you for the reply. It seems you are spot on. Unfortunately, I cannot seem to find the PG version anywhere, so I'll just be returning the one I have and looking for another one. If you have any suggestions or tips, let me know. Thank you for the help!

    Added after 1 [minutes]:

    >>21829537
    Thank you for the reply. The one I ordered was indeed the 5P, so it wasn't a mistaken order or anything. I was unaware that I needed the 5PG version. I can't find the PG version anywhere, unfortunately, so I'll just have to look for alternatives. Thank you for the help!
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    #5 21833809
    barrrrrman
    Level 14  
    Posts: 101
    Help: 12
    Rate: 20
    You can call Cyfral and ask if they will send you such a Smarta 5PG board
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    #6 21833949
    Ircys
    Intercoms specialist
    Posts: 6971
    Help: 1342
    Rate: 2085
    chriskiriakou12 wrote:
    Unfortunately I can't find a PG version anywhere, so I'll just return the one I have and look for another. If you have any suggestions or tips, please let me know.


    Look for an uniphone with a built-in generator. If you can't find a Cyfral Smart 5pg, then there may be a Fermax ref 3431 for example
  • #7 21843496
    chriskiriakou12
    Level 2  
    Posts: 4
    >>21833809
    Thank you for the idea. I contacted Cyfral support, and they sent over a 5PG board for free. It arrived today, and after installing it, it worked like a charm. Thank you!
  • #8 21843497
    chriskiriakou12
    Level 2  
    Posts: 4
    I contacted Cyfral support and they sent over a 5PG board which includes a built-in generator. This fixed the issue.

Topic summary

LABEL_AI_GENERATED
The Cyfral Smart 5P intercom was installed as a replacement for a Seko LT 600, but the buzzer/ringing sound was extremely quiet and the microphone level also seemed low. The issue was identified as using the wrong uniphone version: the Smart 5P lacks a built-in generator needed for this installation, while the Smart 5PG includes the generator. The suggested fix was to use a model with an integrated generator or obtain a 5PG board from Cyfral support. After contacting Cyfral, a 5PG board was provided and installing it resolved the problem.
AI summary based on the discussion. May contain errors.
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